Effects of silicate depletion on photosynthesis by diatoms in the plume of the Hudson River

✍ Scribed by T. C. Malone; C. Garside; P. J. Neale

• Book ID: 104752735
• Publisher: Springer-Verlag
• Year: 1980
• Tongue: English
• Weight: 726 KB
• Volume: 58
• Category: Article
• ISSN: 0025-3162
• DOI: 10.1007/bf00391876

✦ Synopsis

Silicate depletion was observed during a bloom of netplankton diatoms. Netplankton chlorophyll a increased over the same salinity range and at the same rate that silicate decreased. Silicate depletion coincided with a decrease in the apparent Si:N uptake ratio as well as a change in the magnitude and diurnal phasing of light saturated photosynthesis (pB) by netplankton diatoms. Nanoplankton pB was unar~fected by silicate depletion 9 r 0 and increased with temperature. Consequently, nanoplankton pB eventually exceeded netplankton pB while m m netplankton biomass was still increasing relative to nanoplankton biomass.